... drill bit Nonstandard screw driver bits (cu hex screwdriver bits1.Material types:6150,8660,S22.Surface treatment:sandblasted, tin- ... coating, Cu-coating, Ni-coating, Cr-coating, Zn-coating3.Head types:PH, PZ, slot, Torx, square, hex, hex-plus, Z ... .Special heat-treated6.Different sizes available7.Hardress:58-60The hex screwdriver bit be listed here is the part we have now ...